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/*
* Copyright © 2006 - 2017 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "brw_clip.h"
#include "common/gen_debug.h"
const unsigned *
brw_compile_clip(const struct brw_compiler *compiler,
void *mem_ctx,
const struct brw_clip_prog_key *key,
struct brw_clip_prog_data *prog_data,
struct brw_vue_map *vue_map,
unsigned *final_assembly_size)
{
struct brw_clip_compile c;
memset(&c, 0, sizeof(c));
/* Begin the compilation:
*/
brw_init_codegen(compiler->devinfo, &c.func, mem_ctx);
c.func.single_program_flow = 1;
c.key = *key;
c.vue_map = *vue_map;
/* nr_regs is the number of registers filled by reading data from the VUE.
* This program accesses the entire VUE, so nr_regs needs to be the size of
* the VUE (measured in pairs, since two slots are stored in each
* register).
*/
c.nr_regs = (c.vue_map.num_slots + 1)/2;
c.prog_data.clip_mode = c.key.clip_mode; /* XXX */
/* For some reason the thread is spawned with only 4 channels
* unmasked.
*/
brw_set_default_mask_control(&c.func, BRW_MASK_DISABLE);
/* Would ideally have the option of producing a program which could
* do all three:
*/
switch (key->primitive) {
case GL_TRIANGLES:
if (key->do_unfilled)
brw_emit_unfilled_clip( &c );
else
brw_emit_tri_clip( &c );
break;
case GL_LINES:
brw_emit_line_clip( &c );
break;
case GL_POINTS:
brw_emit_point_clip( &c );
break;
default:
unreachable("not reached");
}
brw_compact_instructions(&c.func, 0, 0, NULL);
*prog_data = c.prog_data;
const unsigned *program = brw_get_program(&c.func, final_assembly_size);
if (unlikely(INTEL_DEBUG & DEBUG_CLIP)) {
fprintf(stderr, "clip:\n");
brw_disassemble(compiler->devinfo,
program, 0, *final_assembly_size, stderr);
fprintf(stderr, "\n");
}
return program;
}
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